One vertex per element, one color per generator, with an edge from x to x·s.
(10,14)(15,21)(16,19)(22,23)(25,26)(27,34)(28,38)(29,33)(30,35)(31,32)(36,37)(39,40) involution — undirected(1,2)(3,6)(4,7)(5,8)(9,10)(11,15)(12,16)(13,14)(17,22)(18,21)(19,20)(23,24)(26,32)(28,35)(33,34)(36,39) involution — undirected(1,3)(2,5)(4,8)(6,7)(25,27,31,29)(26,33,32,34)(28,36,35,39)(30,37,38,40)(1,3)(2,6)(4,8)(5,7)(9,10)(11,15)(12,19)(13,14)(16,20)(17,23)(18,21)(22,24)(25,28)(26,30)(27,36)(29,39)(31,35)(32,38)(33,37)(34,40) involution — undirected(9,11,13,18)(10,15,14,21)(12,17,20,24)(16,22,19,23)(25,29,31,27)(26,34,32,33)(28,39,35,36)(30,40,38,37)(1,2)(3,5)(4,7)(6,8)(9,12)(10,16)(11,17)(13,20)(14,19)(15,22)(18,24)(21,23)(25,30)(26,35)(27,37)(28,32)(29,40)(31,38)(33,39)(34,36) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.